Figures

Comparison of failure pressure from full-scale pipe test data with those from two existing engineering estimation schemes for pipes with local wall thinning under internal pressure. Detailed information on pipe test data is given in Tables 1 and 2.

Comparison of σlocal, estimated according to Eq. (16), with FE results for pipes with local wall thinning under global bending. The defect is located in the compressive stressed region.

Effect of material on estimated σlocal, according to Eq. (16), with FE results for pipes with local wall thinning under global bending: (a) for the case when the defect is subject to tension, and (b) for the case when the defect is subject to compression.

Comparison of failure pressure from full-scale pipe test data under internal pressure with those from the proposed method based on (a) ultimate tensile stress, and (b) true ultimate tensile stress. Detailed information on pipe test data is given in Tables 1 and 2.

Comparison of failure moment from full-scale pipe test data under global bending with those from the proposed method based on both ultimate tensile stress and true ultimate tensile stress: (a) for the case when the defect is subject to tension, and (b) for the case when the defect is subject to compression. Detailed information on pipe test data is given in Tables 3 and 4.

Schematic illustration of a pipe with idealized local wall thinning, under internal pressure P or global bending moment M

Comparison of failure moment from full-scale pipe test data for pipes with local wall thinning under global bending to net-section collapse (NSC) analysis: (a) for the case when the defective region is subject to tensile stresses; and (b) for the case when the defective region is subject to compressive stresses. Detailed information on pipe test data is given in Tables 3 and 4.

Return to: Reference Stress Based Approach to Predict Failure Strength of Pipes With Local Wall Thinning Under Single Loading

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